Spending the afternoon in the pool with your dog (or unusually brave cat) sounds fun, but what if your pet is a polar bear? A polar bear? Yes, a polar bear. Mark Dumas and his pet polar bear Dawn enjoy taking the occasional dip together, and, while it does look quite refreshing, it's hard to imagine one could ever relax fully knowing they could be mauled at any instant? Dumas has raised Dawn since she was six weeks old, so one hopes she knows not to pummel to death the hand that feeds her. Still, she's certainly a riskier swimming companion than your average Golden Retriever.